Barataria Pass at Grand Isle water level

Name: Barataria Pass at Grand Isle water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Barataria Pass, Louisiana, United States

Directions

Higher than ever recorded here

Water level

7.90ft Steady over the last 24 hours

Measured Oct 21, 2026, 01:15 AM CDT (1 hour ago)

Water temperature: 73 °F

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

The gauge at Barataria Pass at Grand Isle shows 7.90 ft, at a record high.

It has now passed the published record high of 4.05 ft (July 18, 1997). The median for late October is 7.62 ft, based on 13 years of readings, so the river stage is 0.28 ft above typical. On the same day last year the reading was 7.82 ft, a difference of +0.08 ft.

It has barely moved over the past 24 hours. Over the past 30 days it has moved between 6.98 ft and 8.77 ft.

That stands out in fall, when many rivers are usually near their lowest. The water temperature at the gauge is 73 °F.

Compared with the highest and lowest levels the agency has recorded at this gauge. How to read levels

Key numbers

Median for this date: 7.62 ft0.28 ft above the median for this date
Normal for this date: 6.91 ft – 8.36 ft8 years in 10 fall in this range (13 years of records)
Same day last year: 7.82 ft+0.08 ft
Lowest and highest in 30 days: 6.98 ft – 8.77 ft
Lowest and highest in 12 months: 5.65 ft – 8.77 ft
Highest on record: 4.05 ftJuly 18, 1997
Highest on record: 3.85 ft above the highest level on record

High water at Barataria Pass at Grand Isle

The National Weather Service splits flooding into minor, moderate and major flood stage, each tied to what starts to go under water at this particular gauge. Minor flooding usually means low roads, parks and farmland; major flooding reaches homes and businesses.

Keep children and dogs well back from the edge, and stay off flooded footpaths and towpaths.

Highest crests on record

Rank	Level	Date
1	4.05 ft	July 18, 1997
2	2.97 ft	March 13, 1999

Weather at the gauge

No rain in the last 3 days.

20 Tue 75° 72° – Wind 21 mph

21 Wed 75° 72° – Wind 15 mph

22 Thu 80° 65° – Wind 12 mph

23 Fri 80° 63° – Wind 13 mph

24 Sat 79° 68° – Wind 20 mph

25 Sun 76° 70° – Wind 22 mph

26 Mon 80° 68° 0.01 in Wind 16 mph

Forecast: Open-Meteo

Sunrise 07:06 AM Sunset 06:25 PM Daylight 11 hr, 19 min Waxing gibbous 75%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Barataria Bay near Grand Terre IslandLake, Barataria Bay	2.97 ft	Normal	±0	3.6 mi
Hackberry Bay NW of Grand IsleEstuary gauge	3.79 ft	Very high	−0.15 ft	10 mi
Barataria Waterway at Mud Lake S of LafitteRiver gauge, Barataria Waterway	6.78 ft	Normal	+0.02 ft	14 mi
Little Lake near Bay Dosgris E of GallianoLake, Little Lake	5.11 ft	Normal	+0.07 ft	16 mi
Bayou Perot at Point Legard near CutoffEstuary gauge, Bayou Perot	2.50 ft	Normal	+0.03 ft	24 mi
Naomi Diversion Canal near NaomiRiver gauge, Naomi Diversion Canal	1.47 ft	Normal	+0.22 ft	30 mi
Northeast Bay Gardene near Point-A-LA-HacheEstuary gauge, Northeast Bay Gardene	1.61 ft	Normal	−0.15 ft	30 mi
Crooked B. NW of L. Cuatro Caballo near DelacroixEstuary gauge, Crooked B. NW of L. Cuatro Caballo	5.96 ft	High	−0.06 ft	34 mi

Questions and answers

Is the Barataria Pass at Grand Isle higher than last year?

Yes, it is 0.08 ft higher than on the same day last year, when the reading was 7.82 ft.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Barataria Pass at Grand Isle today?

On Oct 21, 2026, 01:15 AM CDT, the water level was 7.90 ft. Steady over the last 24 hours.

Is Barataria Pass at Grand Isle rising or falling?

Steady over the last 24 hours. Up 0.33 ft over the last 7 days.

Is the level of Barataria Pass at Grand Isle normal?

Higher than ever recorded here. Compared with the highest and lowest levels the agency has recorded at this gauge.

What is the highest water level ever recorded at Barataria Pass at Grand Isle?

The highest level on record is 4.05 ft on July 18, 1997.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:073802516 (Agency page)
Coordinates: 29.27283, -89.94681 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	7.90 ft	2026-10-21 06:15	Provisional
Water temperature	73 °F	2026-10-21 06:00	Provisional

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How to cite

U.S. Geological Survey: Barataria Pass at Grand Isle (usgs:073802516). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/louisiana/barataria-pass-at-grand-isle

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer